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Re: Protect Loop Execution with Traps

From: Greg Wooledge
Subject: Re: Protect Loop Execution with Traps
Date: Wed, 29 Jan 2020 15:22:44 -0500
User-agent: Mutt/1.10.1 (2018-07-13)

On Wed, Jan 29, 2020 at 03:19:07PM -0500, Roger wrote:
> >sigint_handler() {
> >    trap - INT
> >    kill -INT $$
> >}
> >trap sigint_handler INT
> One thing to note here, I tried inserting the "trap sigint_handler INT" prior 
> to the loop/for/while statement (or outside of the loop) and the trap doesn't 
> work as you state it does for yourself.
> I find I have to insert "trap sigint_handler INT" within my loop (for/while) 
> section of code, for the trap to work.  In my eyes or for me, this works as 
> expected.

That sounds like your loop is inside a subshell.  Possibly because
you're using it in a pipeline, or possibly other reasons.

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